Fault debouncing
Downstream (post-cat) O2 sensor voltage < 0.2 V with rich lambda specification in active test for one bank, and downstream (post-cat) O2 sensor voltage > 0.7 V with lean lambda specification in active test on the other bank
Downstream (post-cat) O2 sensor voltage < 0.2 V with rich lambda specification in active test for one bank, and downstream (post-cat) O2 sensor voltage > 0.7 V with lean lambda specification in active test on the other bank